Measuring and bag-filling device.



A. B. CROSBY. MEASURING AND BAG FILLING DEVICE. APPLICATION FILED AUG. 2, 1910.

Patented July 9, 1912.

36 5 f A M WITNESSES: INVENTOR ATTORNEYS COLUMBIA PLANOGRAPH cm, WASHINGTON. D. c.

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ARNOLD TB. CROSBY, OF EAST BOSTON, MASSACHUSETTS.

MEASURING AND BAG-FILLING DEVICE.

Specification of Letters Patent.

Application filed August 2, 1910.

Patente d July 9, 1912. Serial No. 575,101.

T 0 all w/iom 2'6 may concern:

Be it known that I, ARNOLD B. CROSBY, a

citizen of the United States, and a resident of East Boston, in the county of Suffolk and State of Massachusetts, have invented a new and Improved Measuring and Bag- Filling Device, of which the following is a full, clear, and exact description.

This invention relates to certain improvements in apparatus for measuring out quan tities of material and delivering the same to containers.

My invention is particularly applicable for use in filling bags with coarse material,

such for instance, as coal. Coal is often sold 1n small quant1t1es,for 1nstance,twenty five pounds, in a bag, and the particular device illustrated is designed for filling suchbags wit-h this small quantity of coal. As ditfe'ent grades of coal differ in density, and as the coarseness or thickness of the coal varies to a certain extent the mass of coal which may be contained in the measuring chamber of the apparatus must be varied and therefore I provide means constituting the important feature of my invention, which permits of the delivery of such a small quai'ltity of extra coal as may be necessary to bring the quantity in the bag up to the required standard of weight.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures, and in which Figure 1 is a side elevation of an apparatus constructed in accordance with my invention; and Figs. 2 and 3 are tran use sections on the lines 2-2 and 3-45, respectively, of Fig. 1.

In the form illustrated, I employ a main delivery spout or container 10, subdivided into an upper supply chamber in communication with an overhead tank or any other suitable source of supply, and a lower or measuring chamber adapted to contain ap proximately the required weight of material being measured, which material will hereinafter be referred to as coal. The division between the two compartments is effected by a valve plate 11, which may move transversely acrossthe container 10 and form a partition or may be swung laterally to permit the free flow of coal from the upper compartment or chamber to the lower or measuring chamber. This valve i i l r plate may be of any suitable character but preferably the walls of the two chambers are spaced apart, and each is provided with a peripheral flanged member 12. These flanged members are held in predetermined relationship to each other by suitable bolts, and the valve plate 11 is mounted to swing between the two members 12. As illustrated particularly in Fig. 2, the valve plate is mounted to swing on a pivot 13 and has an outwardly-extending arm 14, by means of which it may be swung. A cord 15 may be connected to this arm and may extend over a suitable pulley 16 to a foot lever 17, so that the valve may be pulled open by pressing on the foot lever. A suitable spring 18 normally tends to hold the valve in closed position. As illustrated, the valve when in open position, rests upon a guide 19, which latter. may also serve as a support for one end of the spring 18.

At the lower end of the measuring chamber, I provide a similar valve 20, mounted to swing on a pivot 21, and having an outwardly-extending handle 22. The details of this valve may be similar to that above described, although this valve is preferably operated by hand. As illustrated, the valve 20 rests upon a guide 23, and is normally held in closed position by a coil spring '24. The two valve plates 11 and 20 are spaced apart at such a distance that the chamber between the two valve plates will contain approximately the desired quantity of material. In order to vary the size of this measuring chamber between the two valve plates, the wall of the chamber is preferably formed of two telescoping sections 25 and 26, normally designed to be held rigid in respect to each other. Any suitable form of adjustable fastening bolts 28 may be employed for supporting the lower section, and a suitable bolt 29 is provided, to pre vent any rotation or twisting of one section in respect to the other.

In using this device, it is not always pos sible to get exactly the required number of pounds in the measuring chamber, and it is above the valve 11, and the other end of which communicates with the measuring chamber below the valve 11. This by-pass is of small cross-section compared to the size of the measuring chamber,but is of sufiicient size to let pass therefrom pieces of the material being measured. lVithin this by-pass there is a valve 31, which may be similar in construct-ion to the other valves above described, that is, it may be mounted on a pivot 32 and have an operating arm 33. For swinging this arm, 1 preferably mount a lever 34L, vertically on the side of the supply chamber, the upper end of the lever being pivoted and the lower end terminating in a handle within easy reach of the operator. This lever swings within a suitable guide 35, and is connected by a link 36 to the arm 33 of the valve 31. A suitable spring 37 normally tends to hold the valve in closed position.

In using my improved device, themouth of a bag or other container is placed over the reduced nozzle forming the lower end of the apparatus, the valve 20 is closed and the valve 11 is opened. The material immediately falls, and the valve 11 is then closed, so as to separate the supply chamber from the measuring chamber. The valve 20 is then opened and the measured quantity of material is permitted to flow to the bag or other container. The latter may stand on a pair of scales, and the valve 31 may then be opened so that a very small and easily controlled stream of material may flow through the by-pass and the measuring chamber directly into the container, until the amount of material in the latter comes up to the required weight. Thus, approximately the correct amount may be delivered to the bag from the-measuring chamber, almost instantly, while the additional quantity required may be delivered under perfect control. Very little power is required to operate the small valve or gate 31, so that this valve may be closed the instant the scales show that the container has received the correct amount.

Various changes may be made in the construction and operation of my improved device, without departing from the spirit of my invention.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A measuring device comprising a vertical container, a valve in the container intermediate of its ends and dividing it into an upper or supply chamber and a lower or measuring chamber, a valve at the lower end of the measuring chamber, a by-pass exterior of the container and having its upper end opening into the supply chamber inter mediate of the ends thereof and its lower end opening into the measuring chamber, and a valve in the by-pass.

2. A measuring device, comprising a container, a pivoted and spring pressed valve in the container intermediate of its ends and dividing it into a supply chamber and a measuring chamber, a pivoted and spring pressed valve at the lower end of the measuring chamber, a by-pass exterior of the container and having one end opening into the supply chamber intermediate of the ends thereof and its other end opening into the measuring chamber, and a pivoted and spring pressed valve in the by-pass.

3. A measuring device, comprising a container, a valve plate pivoted to the container intermediate of the ends thereof and moving transversely across the container and dividing it into two chambers, a spring for holding the valve closed, means for operating the valve, a second valve plate pivoted at the lower end of the container and moving transversely across the same, a spring for holding the valve closed, a tubular by-pass having its upper end opening into the upper chamber above the bottom thereof and its lower end opening into the lower chamber, a valve plate pivoted to the by-pass and moving transversely of the same, and means for operating the said valve.

4., In a measuring device, the combination of a container having an opening in its side and provided with a guide projecting from the outer face of the container adjacent to said opening, a valve plate pivoted to the container, to move transversely of the container and out through the opening thereof, and when open to rest with its free end upon said guide, the said valve plate being provided at its pivoted end with an outwardly projecting member, and a spring having one end secured to the said member and its other end to the guide.

Intestimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ARNOLD B.- CROSBY.

W'itnesses ARTHUR WV. HILL, Josnrn GOLDINGER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

